I know Toto lists water spot (Toto lists it as "Water Surface") on each toilet.
Form the Toto web site ( http://www.totousa.com/ ) Select a toilet, click on the "Downloads & Resources" tab, click on "Spec Sheet", click on models listed, located on the second page is the Water Surface size.

I don't know of an easy way to find water spot size in a more efficient manner.

I will at least tell you about some Totos you should consider. All the Totos I list meet your criteria for ADA (or "Universal") height, and are: (a) Reliable; (b)gravity toilets with (c) a GREAT flush.

Thanks and I apologize if I seemed ungrateful. I've heard lots of good things about Toto over the years (I'm a remodeler). Problem is no Toto dealers in my area, so I'm left with American Standard and Kohler. Kohler's Highline Classic 14799-0 has a 11-3/8 x 8 water spot, which seems to be at least as good as any you listed. I'm also interested in American Standard's 710FA.101.020, but can't find any specs on their website.

I have to wonder why the water surface area is of concern and can only surmise it is to keep streaks below the water line. If so, one must also ascertain the location relative to the plumb line of the dump.

Toto is based in Georgia. Try here for places that carry them: http://www.totousa.com/Default.aspx?tabid=185 Also online sources available if nobody in your area. CST744S or CST744E are going to be available at a price close to that AS you are looking at.

The AS you mentioned -- is this a Lowe's only item (the "Saver" series)? I can't match the Lowe's item to a specific model on the AS web site. Good luck on getting good quality from AS at a big box, so I would call this a no-go. (Lots of info on this site about quality issues with AS toilets.)

Also, for what it's worth, depth is important too, in a water spot. There's a limit to how many litres the water spot can be and still keep the flush cycle (which includes the refill in its measurement) at the specified amount. So wide and shallow may not cover the waste, if you know what I mean. I'm not aware of anyone who gives the spec on the liquid volume of the waterspot.

The AS you mentioned -- is this a Lowe's only item (the "Saver" series)? I can't match the Lowe's item to a specific model on the AS web site. Good luck on getting good quality from AS at a big box, so I would call this a no-go. (Lots of info on this site about quality issues with AS toilets.)

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Yes, Lowe's is the closest source to the job site. I personally used a couple of AS toilets for a decade and needed only to replace the flappers. Have you seen any complaints about this particular model?

NOW we are talking turkey! Bottom line is that Toto uses straightforward, non-proprietary parts made in large part by Korky here in the US and for which factory-authorized Korky replacement parts are available at any Lowe's and many local hardware stores.

So, now and for the forseeable future, you will have no problem getting replacement parts easily and locally, or by mail order from Lowe's at an affordable price. Toto also has excellent customer service; if you call them with an issue, they are in Georgia, are very nice, and often will just send you a part free even if they don't have to, just to keep you as a happy customer.

The first two are long-discontinued "Reliance Commercial Line" toilets, and the 713 is I think the Carusoe, all with 2" flush valves. Last spec sheets I found on the first ones were from 1997.

Come on to the 21st Century! Terry indicates that the basic Drake, with readily-available parts and a great flush with the 3" flush valve, is something he considers commercial grade. I think I saw where he just put a bunch of them in his local church (look at the end of the CST744 owner reviews). It comes in an ADA height version and a right-handle if you need them at the job site. CST744SL or CST744EL for the ADA-height and add an "R" to the model for a right-handle.

We generally don't talk about online sources here, but you'll see what i mean if you google the model number. look at colonial white as well as cotton when you find the site. colonial is closer to current AS white.